General power machine crankshaft

Abstract

The utility model belongs to the technical field of power machines, and particularly relates to a general power machine crankshaft which comprises a crankshaft main journal and a flying disc, an oil injection hole is formed in the crankshaft main journal, a balance weight crank is fixedly installed at one end of the crankshaft main journal, and a connecting rod bent neck is fixedly installed on one side of the balance weight crank. And a crankshaft upper bearing bush is rotationally mounted outside the crankshaft main journal. The rolling balls are installed in the bearing in a circular array mode, friction of the crankshaft to a flying disc can be reduced, so that the transmission efficiency is improved, the side face of the balance weight crank is in a blade shape, air resistance of the balance weight crank can be reduced, crankshaft power loss is reduced, the transmission efficiency of the crankshaft is improved, and the service life of the crankshaft is prolonged. The second fixing rod penetrates through the crankshaft upper bearing and the crankshaft lower bearing, and the second fixing rod is in threaded connection with the interiors of the crankshaft upper bearing and the crankshaft lower bearing, so that the crankshaft upper bearing and the crankshaft lower bearing can be fixed through the second fixing rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of power machines, and in particular relates to a universal power machine crankshaft. Background Art

[0002] A power machine is a machine that converts heat energy, electrical energy, etc. into mechanical energy to drive other machines to work. For example, electric motors, steam engines, turbines, internal combustion engines, and windmills are also called engines. Among them, gasoline engines use gasoline as fuel and adopt electric ignition. The speed is generally between 3000 and 6000 rpm, and even up to 10,000 rpm. The power ranges from a few hundred watts to a few hundred kilowatts. In agriculture and forestry, it is widely used as the power of tea pickers, lawn mowers, machine hoes, sprayers, brush cutters, machine saws, etc. In transportation, it is used as the power of motorcycles, cars, and boats. In addition, small generator sets used for communications and movie projectors, rock drills for mining, and tamping machines for construction are all powered by small gasoline engines. Early aircraft were powered by large gasoline engines, but later they were basically turbines. The crankshaft is a relatively important part of the power machine. During the operation of the crankshaft, it will cause a certain degree of loss due to air resistance, and there is room for optimization and improvement of the crankshaft. Utility Model Content

[0003] In order to solve the problems raised in the above background technology, the utility model provides a universal power machine crankshaft, which solves the problem that the universal power machine crankshaft suffers from large power loss due to air resistance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a general power engine crankshaft, comprising a crankshaft main journal and a flying disc, an oil filling hole is opened inside the crankshaft main journal, a counterweight crank is fixedly installed on one end of the crankshaft main journal, a connecting rod crank is fixedly installed on one side of the counterweight crank, an upper crankshaft bearing is rotatably installed on the outside of the crankshaft main journal, a lower crankshaft bearing is rotatably installed on the outside of the crankshaft main journal, a fixed platform is slidably installed on the outside of the lower crankshaft bearing, a No. 1 fixing rod is installed on the internal thread of the fixing platform, and a crankshaft is rotatably installed on the outside of the connecting rod crank The upper bearing, the outer side of the connecting rod crank neck is rotatably mounted with the crankshaft lower bearing, the inner thread of the crankshaft upper bearing is mounted with a No. 2 fixing rod, the top of the crankshaft upper bearing is fixedly mounted with a transmission rod, the inner side of the transmission rod is rotatably mounted with a roller, the outer side of the roller is rotatably mounted with a piston, one end of the crankshaft main journal is fixedly mounted with an insulating block, one side of the insulating block is fixedly mounted with a front end shaft, the outer side of the front end shaft is fixedly mounted with a No. 1 tooth, the outer side of the flying disc is fixed with a No. 2 tooth, the inner thread of the flying disc is mounted with a fastening bolt, and the inner side of the flying disc is rotatably mounted with a bearing.

[0005] Preferably, balls are installed inside the bearing, and the balls are installed inside the bearing in a circular array.

[0006] Preferably, the side surface of the counterweight crank is blade-shaped.

[0007] Preferably, the second fixing rod passes through the crankshaft upper bearing and the crankshaft lower bearing, and the second fixing rod is threadedly connected to the inside of the crankshaft upper bearing and the crankshaft lower bearing.

[0008] Preferably, a groove is formed on the surface of the piston.

[0009] Preferably, a fixing ring is rotatably mounted on the outside of the crankshaft upper bearing, and a connecting hole is opened on the surface of the fixing ring.

[0010] Preferably, each crankshaft main journal is provided with an oil filling hole inside, and the oil filling holes are opened in an oblique line.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The crankshaft of the universal power engine can reduce the friction of the crankshaft on the flying disc by installing balls inside the bearing, and the balls are installed inside the bearing in a circular array, so as to improve the transmission efficiency. By making the side of the counterweight crank blade-shaped, the air resistance of the counterweight crank can be reduced, the loss of crankshaft power can be reduced, and the transmission efficiency of the crankshaft can be improved. By making the No. 2 fixing rod pass through the upper crankshaft bearing and the lower crankshaft bearing, and the No. 2 fixing rod is threadedly connected to the upper crankshaft bearing and the lower crankshaft bearing, the upper crankshaft bearing and the lower crankshaft bearing can be fixed by the No. 2 fixing rod. By opening a groove on the surface of the piston and the groove on the top of the piston, the volume of the combustion chamber can be increased, thereby reducing the compression ratio, preventing detonation and extending the life of the engine.

[0013] 2. The crankshaft of the universal power engine has a rotating fixed ring installed on the outside of the bearing on the shaft, and a connecting hole is opened on the surface of the fixed ring. A No. 1 fixing rod can be installed in the connecting hole to restrict the upper bearing and the lower bearing of the crankshaft to the inside of the fixed platform. By opening an oil filling hole inside each crankshaft main journal, and the oil filling holes are opened in an oblique line, the engine oil can be better flowed to various positions of the crankshaft that need lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation on the present invention. In the drawings:

[0015] Figure 1 It is a complete structural schematic diagram of the utility model;

[0016] Figure 2It is a front view of the utility model;

[0017] Figure 3 It is a left view of the utility model.

[0018] In the figure: 1. crankshaft main journal; 2. flying disc; 3. oil filling hole; 4. counterweight crank; 5. connecting rod neck; 6. crankshaft upper bearing; 7. crankshaft lower bearing; 8. fixed platform; 9. No. 1 fixing rod; 10. crankshaft upper bearing; 11. crankshaft lower bearing; 12. No. 2 fixing rod; 13. transmission rod; 14. roller; 15. piston; 16. insulating block; 17. front end shaft; 18. No. 1 tooth; 19. No. 2 tooth; 20. fastening bolt; 21. bearing. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 The utility model provides the following technical solutions: a general power machine crankshaft, including a crankshaft main journal 1 and a flying disc 2, an oil filling hole 3 is opened inside the crankshaft main journal 1, a counterweight crank 4 is fixedly installed at one end of the crankshaft main journal 1, a connecting rod crank neck 5 is fixedly installed on one side of the counterweight crank 4, an upper crankshaft bearing 6 is rotatably installed on the outside of the crankshaft main journal 1, a lower crankshaft bearing 7 is rotatably installed on the outside of the crankshaft main journal 1, a fixed platform 8 is slidably installed on the outside of the lower crankshaft bearing 7, a No. 1 fixing rod 9 is threadedly installed on the inside of the fixed platform 8, an upper crankshaft bearing 10 is rotatably installed on the outside of the connecting rod crank neck 5, and the outer A lower crankshaft bearing 11 is rotatably installed on the lower part, a No. 2 fixing rod 12 is installed on the internal thread of the crankshaft upper bearing 10, a transmission rod 13 is fixedly installed on the top of the crankshaft upper bearing 10, a roller 14 is rotatably installed inside the transmission rod 13, a piston 15 is rotatably installed on the outside of the roller 14, an insulating block 16 is fixedly installed on one end of the crankshaft main journal 1, a front end shaft 17 is fixedly installed on one side of the insulating block 16, a No. 1 tooth 18 is fixedly installed on the outside of the front end shaft 17, a No. 2 tooth 19 is fixed on the outside of the flying disc 2, a fastening bolt 20 is installed on the internal thread of the flying disc 2, and a bearing 21 is rotatably installed inside the flying disc 2.

[0021] In this embodiment, by installing balls inside the bearing 21, and the balls are installed inside the bearing 21 in a circular array, the friction of the crankshaft on the flying disc 2 can be reduced, thereby improving the transmission efficiency. By making the side of the counterweight crank 4 blade-shaped, the air resistance of the counterweight crank 4 can be reduced, the loss of crankshaft power can be reduced, and the transmission efficiency of the crankshaft can be improved. By making the second fixing rod 12 pass through the crankshaft upper bearing 10 and the crankshaft lower bearing 11, and the second fixing rod 12 is threadedly connected to the crankshaft upper bearing 10 and the crankshaft lower bearing 11, the crankshaft upper bearing 10 and the crankshaft lower bearing 11 can be connected through the second fixing rod 12. The fixing rod 12 is fixed, and a groove is formed on the surface of the piston 15, and the groove on the top of the piston can increase the volume of the combustion chamber, thereby reducing the compression ratio, preventing knocking and extending the life of the engine. A fixing ring is installed on the outside of the shaft bearing 6 and a connecting hole is formed on the surface of the fixing ring. The No. 1 fixing rod 9 can be installed in the connecting hole so that the crankshaft upper bearing 6 and the crankshaft lower bearing 7 are restricted inside the fixing platform 8. By forming an oil filling hole 3 inside each crankshaft main journal 1, and the oil filling holes 3 are formed in an oblique line, the engine oil can be better flowed to various positions of the crankshaft that need lubrication.

[0022] Specifically, balls are installed inside the bearing 21, and the balls are installed in a circular array inside the bearing 21. By installing balls inside the bearing 21, and the balls are installed in a circular array inside the bearing 21, the friction of the crankshaft on the flying disc 2 can be reduced, thereby improving the transmission efficiency.

[0023] Specifically, the side surface of the counterweight crank 4 is in a blade shape. By making the side surface of the counterweight crank 4 in a blade shape, the air resistance of the counterweight crank 4 can be reduced, the loss of crankshaft power can be reduced, and the transmission efficiency of the crankshaft can be improved.

[0024] Specifically, the No. 2 fixing rod 12 passes through the crankshaft upper bearing 10 and the crankshaft lower bearing 11, and the No. 2 fixing rod 12 is threadedly connected to the interior of the crankshaft upper bearing 10 and the crankshaft lower bearing 11. By passing the No. 2 fixing rod 12 through the crankshaft upper bearing 10 and the crankshaft lower bearing 11, and the No. 2 fixing rod 12 is threadedly connected to the interior of the crankshaft upper bearing 10 and the crankshaft lower bearing 11, the crankshaft upper bearing 10 and the crankshaft lower bearing 11 can be fixed by the No. 2 fixing rod 12.

[0025] Specifically, grooves are provided on the surface of the piston 15. The grooves on the surface of the piston 15 can increase the volume of the combustion chamber, thereby reducing the compression ratio, preventing knocking, and extending the life of the engine.

[0026] Specifically, a fixing ring is installed on the outside of the crankshaft bearing 6 for rotation, and a connecting hole is opened on the surface of the fixing ring. By installing a fixing ring that is installed on the outside of the shaft bearing 6 for rotation, and a connecting hole is opened on the surface of the fixing ring, a No. 1 fixing rod 9 can be installed in the connecting hole to restrict the crankshaft upper bearing 6 and the crankshaft lower bearing 7 to the inside of the fixed platform 8.

[0027] Specifically, an oil filling hole 3 is opened inside each crankshaft main journal 1, and the oil filling holes 3 are opened at an angle. By opening an oil filling hole 3 inside each crankshaft main journal 1, and the oil filling holes 3 are opened at an angle, the engine oil can flow better to various positions of the crankshaft that need lubrication.

[0028] The working principle or use process of the utility model: when the utility model is in use, first the power machine is ignited to push the piston 15, the piston 15 pushes the roller 14 to push the transmission shaft 13 to push the crankshaft upper bearing 10 and the crankshaft lower bearing 11 to push the connecting rod crankshaft 5, thereby rotating the counterweight crank 4 and thus rotating the crankshaft main journal, the crankshaft main journal is restricted by the crankshaft upper bearing 6 and the crankshaft lower bearing 7, thereby driving the crankshaft to rotate, and when the crankshaft rotates, it drives the front end shaft to rotate and output power outward.

[0029] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not intended to limit the utility model. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, technicians in the field can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A general engine crankshaft, comprising a crankshaft main journal (1) and a flying disc (2), characterized in that: An oil filling hole (3) is provided inside the crankshaft main journal (1); a counterweight crank (4) is fixedly mounted on one end of the crankshaft main journal (1); the side surface of the counterweight crank (4) is blade-shaped; a connecting rod crank neck (5) is fixedly mounted on one side of the counterweight crank neck (4); an upper crankshaft bearing (6) is rotatably mounted on the outside of the crankshaft main journal (1); a lower crankshaft bearing (7) is rotatably mounted on the outside of the crankshaft main journal (1); a fixed platform (8) is slidably mounted on the outside of the lower crankshaft bearing (7); a No. 1 fixing rod (9) is threadedly mounted on the inside of the fixed platform (8); an upper crankshaft bearing (10) is rotatably mounted on the outside of the connecting rod crank neck (5); and a lower crankshaft bearing (11) is rotatably mounted on the outside of the connecting rod crank neck (5); A No. 2 fixing rod (12) is installed on the internal thread of the crankshaft upper bearing (10), a transmission rod (13) is fixedly installed on the top of the crankshaft upper bearing (10), a roller (14) is rotatably installed inside the transmission rod (13), a piston (15) is rotatably installed outside the roller (14), an insulating block (16) is fixedly installed on one end of the crankshaft main journal (1), a front end shaft (17) is fixedly installed on one side of the insulating block (16), a No. 1 latching tooth (18) is fixedly installed outside the front end shaft (17), a No. 2 latching tooth (19) is fixedly installed outside the flying disc (2), a fastening bolt (20) is installed on the internal thread of the flying disc (2), and a bearing (21) is rotatably installed inside the flying disc (2).

2. A universal engine crankshaft according to claim 1, characterized in that: Balls are installed inside the bearing (21), and the balls are installed inside the bearing (21) in a circular array.

3. A universal engine crankshaft according to claim 1, characterized in that: The second fixing rod (12) passes through the crankshaft upper bearing (10) and the crankshaft lower bearing (11), and the second fixing rod (12) is threadedly connected to the inside of the crankshaft upper bearing (10) and the crankshaft lower bearing (11).

4. A universal engine crankshaft according to claim 1, characterized in that: A groove is formed on the surface of the piston (15).

5. The universal engine crankshaft according to claim 1, characterized in that: A fixing ring is rotatably mounted on the outside of the crankshaft upper bearing shell (6), and a connecting hole is provided on the surface of the fixing ring.

6. A universal engine crankshaft according to claim 1, characterized in that: An oil injection hole (3) is provided inside each crankshaft main journal (1), and the oil injection holes (3) are all opened in an oblique line.

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